I used to use Express but now, I’ve switched to VPN Unlimited. Express wouldn’t allow me to stream Hulu or Amazon. Unlimited enables it. Also, Express has a monthly fee. Unlimited allows a one-time-for-all purchase.
Beyond this, I can’t help.
Do you have Macs with microsoft email accts on that account? Any issues?
VPN Unlimited is what I use (It’s from a company called KeepSolid).